Update clang to r339409.

Change-Id: I800772d2d838223be1f6b40d490c4591b937fca2
diff --git a/linux-x64/clang/include/llvm/Bitcode/BitcodeWriter.h b/linux-x64/clang/include/llvm/Bitcode/BitcodeWriter.h
index fa32295..0010cf6 100644
--- a/linux-x64/clang/include/llvm/Bitcode/BitcodeWriter.h
+++ b/linux-x64/clang/include/llvm/Bitcode/BitcodeWriter.h
@@ -105,7 +105,7 @@
         const std::map<std::string, GVSummaryMapTy> *ModuleToSummariesForIndex);
   };
 
-  /// \brief Write the specified module to the specified raw output stream.
+  /// Write the specified module to the specified raw output stream.
   ///
   /// For streams where it matters, the given stream should be in "binary"
   /// mode.